Hi Peter, I'm also sort of a beginner. That's along the lines that I was thinking. Doesn't mysql_query return a result set object. So in this sample, wouldn't the IF be testing if the result object was set? I'm just trying to learn what's going on, I realized the code is wrong but didn't know why, which is why I didn't respond earlier. Gary > -----Original Message----- > From: Peter Westergaard [mailto:p.j.westergaard@xxxxxxxxx]On Behalf Of > Peter Westergaard > Sent: Tue, January 08, 2008 11:09 AM > To: php-db@xxxxxxxxxxxxx > Subject: Re: Beginners Problem > > > Ben, I would say that the only reason > > $select_sql_two = mysql_query($select_sql); > > > > if($select_sql_two) { > > > > would refuse to execute is if $select_sql represents an invalid SQL > statement. Whether it has records or not, you should (if I'm > not very > much mistaken) get a resource returned in select_sql_two, which will > make your IF succeed. > > You should probably check out http://php.net/mysql_query for more > information on this function. The difference between "empty > result" and > "invalid query" is significant. Once you've determined that > the query > is valid, you must also then check to see if it returned any rows, > possibly using a function like mysql_num_rows. > > Hope that helps! > -P > > -- > PHP Database Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
